Knock code or not, that hasn't stopped anyone from putting an engine back together before.. or has it?
Don't tune it hard at the knock limit and it will be alright. If you go visit a competent dyno/tuning facility they will have their own knock detection equipment and will be able to set your ignition advance table to a resonable limit, just lower it a few degrees more at torque peak if you're that concerned and want to put a few miles on the engine without worrying about the quality of the fuel you put in.
Gints : Sorry, can't say. I'm hoping me and/or Emil have time to go to Bp to line things up before june.